1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
drek231 [11]
3 years ago
5

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because

of sudden industrial development, the trees in the city were covered with soot. How will this change affect the population of white moths?
The population of white moths will decrease.



The population of white moths will increase.



No change will take place in the population of white moths.



The white moths will change their color.



The moths will change their food preference.
Physics
2 answers:
beks73 [17]3 years ago
7 0

Answer:

The correct answer is option A, The population of white moths will decrease.

Explanation:

Camouflaging techniques used by the moth save them from being identified from their predators Now since the colour of the bark of the tree doesnot remain same due to release of industrial pollution,  the moths can be easily identified by its predators and thus their population count reduces due to extensive predation on being easily identifiable.

Akimi4 [234]3 years ago
6 0

A:The Population Will Decrease.

You might be interested in
if the instantaneous current in the circuit is giveen by I=3 sin theta amperes, the rms value of the current will be
Kisachek [45]

Answer:

I_{rms}=2.12\ A

Explanation:

Given that,

The instantaneous current in the circuit is giveen by :

I=3\sin\theta\ A

We need to find the rms value of the current.

The general equation of current is given by :

I=I_o\sin\theta

It means, I_o=3\ A

We know that,

I_{rms}=\dfrac{I_o}{\sqrt2}\\\\=\dfrac{3}{\sqrt2}\\\\=2.12\ A

So, the rms value of current is 2.12 A.

4 0
3 years ago
A wire 6.60 m long with diameter of 2.05 mm has a resistance of 0.0310 Ω.
Alex73 [517]

Answer:

1.551×10^-8 Ωm

Explanation:

Resistivity of a material is expressed as shown;.

Resistivity = RA/l

R is the resistance of the material

A is the cross sectional area

l is the length of the wire.

Given;

R = 0.0310 Ω

A = πd²/4

A = π(2.05×10^-3)²/4

A = 0.000013204255/4

A = 0.00000330106375

A = 3.30×10^-6m

l = 6.60m

Substituting this values into the formula for calculating resistivity.

rho = 0.0310× 3.30×10^-6/6.60

rho = 1.023×10^-7/6.60

rho = 1.551×10^-8 Ωm

Hence the resistivity of the material is 1.551×10^-8 Ωm

6 0
2 years ago
Which description does the phrase "mechanical advantage" most closely relate to?
yKpoI14uk [10]
<span>the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine. I would say the answer is D, but i'm not sure. :)</span>
4 0
3 years ago
Can we use momentum to see how fast the earth is going?
Kisachek [45]

Yes, if we know the Earth's mass

Explanation:

The momentum of an object is a vector quantity given by the equation

p=mv

where

m is the mass of the object

v is its velocity

In this case, we are asked if we can find the velocity of the Earth by starting from its momentum. Indeed, we can. In fact, we can rewrite the equation above as

v=\frac{p}{m}

Therefore, if we know the momentum of the Earth (p) and we know its mass as well (m), we can solve the formula to find the Earth's velocity.

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

6 0
3 years ago
A 0.3 g mosquito is flying toward a girl with a speed of 4.5 mph. Just before landing on the girl, the fly is swatted straight b
luda_lava [24]

Answer:

1.1x10^-2N

Explanation:

We have the change in momentum as

P = 0.3(4.5+12)g.mph

= 0.3x0.447x(4.5+12)x10^-3

Then the force that is exerted will be

F = p/∆t

∆t = 0.2

= 0.3x0.447x(4.5+12)x10^-3/0.2

= 0.1341x16.5x10^-3/0.2

= 1.1x10^-2

Therefore the force that was exerted is equal to 1.1x10^-2

5 0
2 years ago
Other questions:
  • Difference between kilogram and kilometre in points​
    8·1 answer
  • If you walk 30 meters forwards, and then turn around and walk 25 meters backwards, what is the distance that you walked? What di
    6·1 answer
  • All charged objects create an electric field around them. What two factors determine the strength of two electric fields upon th
    7·1 answer
  • Use vectors to decide whether the triangle with vertices P(1, −2, −1), Q(2, 1, −3), and R(6, −1, −4) is right-angled. Yes, it is
    6·1 answer
  • Consider a system to be two train cars traveling toward each other. What is the total momentum of the system before the train ca
    16·2 answers
  • Which of the following best describes a magnetic field? a region around a magnet in which you can measure magnetic forces. a mea
    11·2 answers
  • Barbara places an object in front of a mirror. The mirror produces an image that is inverted, real, and smaller than the object.
    12·1 answer
  • How does magnetic compass help to identify directions​
    6·1 answer
  • Please help me answer
    13·2 answers
  • A charge is divided q1 and (q-q1)what will be the ratio of q/q1 so that force between the two parts placed at a given distance i
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!